Force on a defect in non-linear elastic medium

摘要: Abstract A derivation is given for the force per unit surface of a defect (e.g. dislocation) in non-linear elastic medium. The based on Lagrangian same form as linear elasticity, introduced [1]. Principle energy conservation deduced basis particular case Noether's theorem. Some peculiar properties are discussed. In constant Burgers vector reduces to Peach-Koehler dislocation line, known theory elasticity.